CN105295982B - The Poly-generation utilization system and its technique of a kind of oil shale attendants - Google Patents
The Poly-generation utilization system and its technique of a kind of oil shale attendants Download PDFInfo
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- CN105295982B CN105295982B CN201510794082.6A CN201510794082A CN105295982B CN 105295982 B CN105295982 B CN 105295982B CN 201510794082 A CN201510794082 A CN 201510794082A CN 105295982 B CN105295982 B CN 105295982B
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- 239000004058 oil shale Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 172
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 238000003860 storage Methods 0.000 claims abstract description 25
- 239000002028 Biomass Substances 0.000 claims abstract description 24
- 238000000197 pyrolysis Methods 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims abstract description 12
- 238000000746 purification Methods 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims description 12
- 239000002910 solid waste Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 238000010248 power generation Methods 0.000 claims description 6
- 239000004566 building material Substances 0.000 claims description 5
- 239000000571 coke Substances 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 abstract 2
- 238000007689 inspection Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 22
- 238000005516 engineering process Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003079 shale oil Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Processing Of Solid Wastes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of Poly-generation utilization system of oil shale attendants, including feed bin, gas retort, oil tank, gas and oil separating plant, mash gas purification apparatus, high temperature gas heating furnace, gas storage tank, nondestructive inspection gas burner, low temperature gas heating furnace, gas turbine, heat exchanger, chimney, steam turbine, CFBB and batcher；Destructive distillation is carried out using the mixture of oil shale and biomass.The invention also discloses a kind of technique, fuel gas is divided into three parts by its step by gas storage tank：One as gas retort gas heat carrier；Two burn as fuel in nondestructive inspection gas burner, produce high-temperature flue gas to be used to heat the gas heat carrier in high temperature gas heating furnace；Three feeding gas turbine combustions, low temperature gas heating furnace hot gas heat carrier is entered after the high-temperature flue gas acting of generation.Oil shale and biomass HYBRID RETORTING are improve the yield of fuel gas by the present invention, realize the purpose of gas fuel burning heat supply, mass transfer and heat-carrying.
Description
Technical Field
The invention belongs to the technical field of oil shale resource utilization, and particularly relates to a poly-generation comprehensive utilization system and a poly-generation comprehensive utilization process of oil shale accompanied substances.
Background
The oil shale is an important unconventional oil gas resource, has huge reserves, can obtain shale oil with the property similar to natural petroleum after being pyrolyzed in a destructive distillation device at 400-600 ℃, and is always used as an important petroleum supplementary energy source in the times of short crude oil supply in the world. At present, the proven oil reserves of shale in the world are more than 4000 hundred million tons (calculated according to the in-situ reserves of the oil shale), which is far higher than the exploitable reserves of crude oil in the world. China is a large country with oil shale resource reserves, and the oil shale resource reserves are 7199.37 hundred million tons, which are converted into the reserves of shale oil of 476.44 million tons.
To alleviate the situation of the oil supply shortage in the world today, oil shale is favored by more and more countries. On the basis of long-term development work, various dry distillation processes are developed by many countries and scientific research institutions, and currently representative dry distillation technologies which are used for industrial production include an Australian ATP dry distillation technology, a Brazilian Petrosix dry distillation technology, an Isania Galoter and Kiviter dry distillation technology, a smooth furnace dry distillation technology in China and the like. Although these technologies have been improved over the years, there are still some problems in actual operation, which cannot be solved completely. For example, the ATP dry distillation technology has large heat loss, the Galoter process flow is complex, the oil shale powder scraps and the oil shale semicoke generated by the smoothing furnace dry distillation technology are not effectively recycled, and meanwhile, the water resource is seriously wasted. In view of these problems, oil shale workers in china, the united states, estonia and other countries increasingly recommend that the oil shale industry better go through a comprehensive utilization technical route of oil production, power generation, chemical industry and building materials, so as to realize efficient and clean utilization of oil shale resources.
The invention patent CN200810013088.5 discloses a gas full-circulation oil shale fractional distillation process and a device, wherein semicoke mixed gas is adopted for combustion to provide heat for an oil shale retort, but semicoke in the process needs to be cooled by water before combustion, so that water resource pollution and semicoke sensible heat waste are caused, and meanwhile, the semicoke subjected to water leaching has a relatively low heat value and is difficult to combust. The patent publication CN201210189395.5 and the patent publication CN201110443734.3 respectively provide a gas-solid combined heat-carrying oil shale fluidized bed dry distillation system and an oil shale rotary kiln dry distillation and circulating fluidized bed combustion process, shale ash generated by oil shale combustion is used as an oil shale dry distillation solid heat carrier, but the transmission of high-temperature shale ash is relatively difficult, and excessive shale ash can cause strong adsorption effect on dry distillation products of the oil shale, so that the shale oil yield is reduced.
Disclosure of Invention
The invention aims to provide a poly-generation comprehensive utilization system and a poly-generation comprehensive utilization process thereof in order to improve the output of combustible gas in the dry distillation process of oil shale and solve the problem of material transmission of a solid heat carrier. The invention provides a poly-generation comprehensive utilization system of oil shale with biomass, which comprises a storage bin, a gas retort, an oil-gas separation device, an oil tank, a high-temperature gas heating furnace, a gas purification device, a gas storage tank, a gas combustor, a gas turbine, a chimney, a low-temperature gas heating furnace, a steam turbine, a heat exchanger, a circulating fluidized bed boiler and a feeder, wherein the oil shale is mixed with the biomass; wherein,
the storage bin is connected with the retort furnace and is used for sample injection; the upper part of the retort is connected with an oil-gas separation device; the oil-gas separation device is connected with the oil tank and the gas purification device; the gas purifying device is connected with the gas storage tank; the gas storage tank is respectively connected with the gas burner, the gas turbine and the low-temperature gas heating furnace; the gas burner and the low-temperature gas heating furnace are both connected with the high-temperature gas heating furnace; the gas turbine is connected with the low-temperature gas heating furnace; the high-temperature gas heating furnace is connected with the gas retort;
the lower part of the retort is connected with a feeder; the feeding machine is connected with the circulating fluidized bed boiler; the circulating fluidized bed boiler is connected with a steam turbine through a heat exchanger;
the low-temperature gas heating furnace, the high-temperature gas heating furnace and the heat exchanger are all connected with the chimney;
the polygeneration comprehensive utilization system uses the mixture of the oil shale and the biomass for dry distillation.
Further, the low-temperature gas heating furnace, the high-temperature gas heating furnace and the heat exchanger are all connected with the chimney, and are specifically connected with the high-temperature gas heating furnace, the heat exchanger and a second Y-pipe through first Y-pipes respectively, and the second Y-pipe is connected with the low-temperature gas heating furnace and the chimney respectively.
Further, the gas turbine and the steam turbine are respectively connected with a power generation device or a heat supply device.
Further, the upper part of the retort is connected with a storage bin.
Further, the top of the retort is connected with an oil-gas separation device; the bottom of the retort is connected with a feeder.
The invention also provides a process using the oil shale and biomass cogeneration comprehensive utilization system, which comprises the following steps:
step one, mixing dried and crushed oil shale and biomass and then feeding the mixture into a storage bin;
secondly, feeding the mixture of the oil shale and the biomass in the bin into a dry distillation furnace, and performing low-temperature dry distillation to generate combustible gas, oil vapor and solid waste semi-coke;
step three, the combustible gas and the oil vapor in the step two leave from the upper part of the gas retort and are separated into the combustible gas and the oil through an oil-gas separation device, the combustible gas is purified by a gas purification device and then stored in a gas storage tank, and the oil is stored in an oil tank;
step four, the combustible gas generated in the step three is divided into three parts by the gas storage tank: the first part is used as a gas heat carrier, and is sent into the gas retort after being heated by a low-temperature gas heating furnace and a high-temperature gas heating furnace; the second part is used as fuel to be burnt in a gas burner, and the generated high-temperature flue gas is used for heating a gas heat carrier in a high-temperature gas heating furnace; the third part is sent to a gas turbine for combustion, and the generated high-temperature flue gas leaves the gas turbine after acting and enters a low-temperature gas heating furnace to heat a gas heat carrier.
Further, still include:
and fifthly, feeding the semi-coke of the solid waste generated in the step two into a circulating fluidized bed boiler through a feeder for combustion.
Further, still include:
and sixthly, heating working medium water in the heat exchanger by high-temperature flue gas generated by combustion of the circulating fluidized bed boiler in the step five, and generating high-temperature steam to enter a steam turbine for heat supply and power generation.
Further, still include:
and step seven, the smoke in the heat exchanger in the step six and the smoke in the low-temperature gas heating furnace and the high-temperature gas heating furnace in the step four flow into the chimney to be discharged.
Further, still include:
and step eight, utilizing the shale ash generated in the circulating fluidized bed boiler in the step five as building materials and chemical raw materials.
Wherein, the third step, the fifth step and the sixth step do not have the sequence; the fifth step, the third step and the fourth step do not have the sequence; and step eight, step four, step six and step seven have no sequence.
The technical effects include:
1) the oil shale and the biomass are used as the mixed fuel, the characteristic that the biomass gas has more oil and less oil to make up the characteristic that the oil shale gas has less oil and more oil is used, and sufficient combustible gas which can be used as a heat carrier and a fuel is generated.
2) The biomass is used as a supplementary energy source, the mixed oil shale is distilled to generate more combustible gas, and the defect that the heat emitted by the combustible gas generated by the single distillation of the oil shale is not enough to maintain the heat required by the distillation of the oil shale is overcome.
3) The heat carrier used by the retort furnace is combustible gas heated by two stages, so that the difficulty of solid heat carrier transmission is overcome.
4) Two-stage heating furnaces are adopted to provide heat for the heat carrier, the heat value in the combustible gas discharged by dry distillation is successfully and effectively utilized, and the cyclic utilization of energy is realized.
5) The circulating fluidized bed boiler has the operating temperature of 850-900 ℃, belongs to low-temperature combustion, effectively controls the generation and the emission of NOx, fully utilizes semi-coke fixed carbon, has low carbon content in shale ash, and can be directly used as building materials and chemical raw materials.
6) The invention realizes the comprehensive optimized utilization of the oil shale, greatly reduces the energy loss, realizes the product diversification and simultaneously produces shale oil, gas, electricity and the like.
7) The high-temperature solid waste generated by the gas retort is used as the fuel of the circulating fluidized bed boiler, the generated high-temperature smoke vaporizes the boiler feed water, and the generated steam is used for supplying heat, applying work and generating power, so that the recycling of the semicoke of the solid waste is realized, the additional benefit of the dry distillation utilization of the oil shale is increased, the energy utilization rate is improved, and the chemical pollution and the thermal pollution of the waste residue of the oil shale are reduced.
8) Combustible gas is used as a heat carrier of heat required by dry distillation of the oil shale, so that the difficulty of solid heat carrier transmission is overcome.
9) The whole system has high oil shale dry distillation oil yield, and avoids the environmental pollution problem of solid waste semicoke, thereby realizing clean and efficient utilization of oil shale resources.
Drawings
Fig. 1 is a schematic diagram of an oil shale with biomass polygeneration comprehensive utilization system of the invention.
The system comprises a storage bin 1, a gas retort 2, an oil-gas separation device 3, an oil tank 4, a high-temperature gas heating furnace 5, a gas purification device 6, a gas storage tank 7, a gas burner 8, a gas turbine 9, a flue 10, a low-temperature gas heating furnace 11, a steam turbine 12, a heat exchanger 13, a circulating fluidized bed boiler 14 and a feeder 15.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
As shown in figure 1, the dried and crushed oil shale and biomass are mixed according to a certain proportion and then are sent into a storage bin 1, and then the mixture descends into a retort 2 to be subjected to low-temperature carbonization to generate combustible gas, oil vapor and solid waste semi-coke. Combustible gas and oil vapor leave from the top of the retort 2 and are separated into the combustible gas and oil through the oil-gas separation device 3, the combustible gas is purified by the gas purification device 6 and then stored in the gas storage tank 7, and the oil is stored in the oil tank 4; the semicoke enters a circulating fluidized bed boiler 14 for combustion through a feeder 15; the gas storage tank 7 divides the combustible gas into three parts: the first part is taken as a gas heat carrier, and is sent into the gas retort 2 after being heated by a low-temperature gas heating furnace 11 and a high-temperature gas heating furnace 5; the second part is used as fuel to be burnt in a gas burner 8, and the generated high-temperature flue gas is used for heating a gas heat carrier in the high-temperature gas heating furnace 5; the third part is sent to a gas turbine 9 for combustion, the generated high-temperature flue gas does work and generates power, then leaves the gas turbine 9 and enters a low-temperature gas heating furnace 11 to heat a gas heat carrier; the high-temperature flue gas generated by the circulating fluidized bed boiler 14 heats the working medium water in the heat exchanger 13, and high-temperature steam is generated and enters the steam turbine 12 for heat supply and power generation; the flue gas from the heat exchanger 13, the low-temperature gas heating furnace 11 and the high-temperature gas heating furnace 5 is gathered and then flows into the chimney 10; the shale ash generated by the circulating fluidized bed boiler 14 can be used as building materials and chemical raw materials.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A poly-generation comprehensive utilization system of oil shale with biomass comprises a storage bin, a gas retort, an oil-gas separation device and an oil tank, and is characterized by further comprising a high-temperature gas heating furnace, a gas purification device, a gas storage tank, a gas combustor, a gas turbine, a chimney, a low-temperature gas heating furnace, a steam turbine, a heat exchanger, a circulating fluidized bed boiler and a feeder; wherein,
the storage bin is connected with the retort furnace and is used for sample injection; the upper part of the retort is connected with the oil-gas separation device; the oil-gas separation device is connected with the oil tank and the gas purification device; the gas purification device is connected with the gas storage tank; the gas storage tank is respectively connected with the gas burner, the gas turbine and the low-temperature gas heating furnace; the gas burner and the low-temperature gas heating furnace are both connected with the high-temperature gas heating furnace; the gas turbine is connected with the low-temperature gas heating furnace; the high-temperature gas heating furnace is connected with the gas retort;
the lower part of the retort is connected with the feeding machine; the feeding machine is connected with the circulating fluidized bed boiler; the circulating fluidized bed boiler is connected with the steam turbine through the heat exchanger;
the low-temperature gas heating furnace, the high-temperature gas heating furnace and the heat exchanger are all connected with the chimney;
the polygeneration comprehensive utilization system performs dry distillation by using a mixture of oil shale and biomass; the gas turbine and the steam turbine are respectively connected with a power generation device or a heat supply device; the upper part of the retort is connected with the storage bin.
2. The system according to claim 1, wherein the low-temperature gas heating furnace, the high-temperature gas heating furnace and the heat exchanger are all connected to the chimney, and are respectively connected to the high-temperature gas heating furnace, the heat exchanger and a second Y-pipe through a first Y-pipe, and the second Y-pipe is respectively connected to the low-temperature gas heating furnace and the chimney.
3. The system for poly-generation and comprehensive utilization of oil shale with biomass according to claim 1, wherein the top of the retort is connected with the oil-gas separation device; the bottom of the retort is connected with the feeding machine.
4. A process using the oil shale with biomass polygeneration integrated utilization system of claim 1, comprising the steps of:
step one, mixing dried and crushed oil shale and biomass and then feeding the mixture into a storage bin;
secondly, feeding the mixture of the oil shale and the biomass in the bin into the retort furnace, and performing low-temperature dry distillation to generate combustible gas, oil vapor and solid waste semi-coke;
step three, the combustible gas and the oil vapor in the step two leave from the upper part of the gas retort and are separated into the combustible gas and the oil through the oil-gas separation device, the combustible gas is purified through the gas purification device and then stored in the gas storage tank, and the oil is stored in the oil tank;
step four, the gas storage tank divides the combustible gas generated in the step three into three parts: the first part is used as a gas heat carrier, and is sent into the gas retort after being heated by the low-temperature gas heating furnace and the high-temperature gas heating furnace; the second part is used as fuel to be burnt in the gas burner, and the generated high-temperature flue gas is used for heating the gas heat carrier in the high-temperature gas heating furnace; and the third part is sent into the gas turbine for combustion, and the generated high-temperature flue gas leaves the gas turbine after doing work and enters the low-temperature gas heating furnace to heat the gas heat carrier.
5. The process of the oil shale with biomass polygeneration comprehensive utilization system according to claim 4, further comprising the steps of:
and step five, the solid waste semicoke generated in the step two enters the circulating fluidized bed boiler through the feeder to be combusted.
6. The process for the poly-generation comprehensive utilization system of oil shale with biomass according to claim 5, further comprising the steps of:
and step six, heating the working medium water in the heat exchanger by high-temperature flue gas generated by combustion of the circulating fluidized bed boiler in the step five to generate high-temperature steam, and feeding the generated high-temperature steam into the steam turbine for heat supply and power generation.
7. The process of the oil shale with biomass polygeneration integrated utilization system according to claim 6, further comprising the steps of:
and step seven, the smoke in the heat exchanger in the step six and the smoke in the low-temperature gas heating furnace and the high-temperature gas heating furnace in the step four flow into the chimney to be discharged.
8. The process for the poly-generation comprehensive utilization system of oil shale with biomass according to claim 7, further comprising the steps of:
and step eight, utilizing shale ash slag generated in the circulating fluidized bed boiler in the step five as building materials and chemical raw materials.
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| CN105255508A (en) * | 2015-11-18 | 2016-01-20 | 上海交通大学 | Poly-generation utilization system of oil shale with highly-volatile coal and process of system |
| CN105295983B (en) * | 2015-11-18 | 2017-06-16 | 上海交通大学 | A kind of oil shale utilizes system and its technique with the Poly-generation of organic solid castoff |
| CN112899000B (en) * | 2019-11-19 | 2022-06-03 | 上海工程技术大学 | Biomass waste volatile component catalytic oil shale dry distillation coupling system and method |
| CN111978972B (en) * | 2020-08-05 | 2021-10-08 | 上海工程技术大学 | Straw waste coupling oil shale comprehensive utilization system and process |
| CN111996020B (en) * | 2020-08-06 | 2021-09-10 | 上海工程技术大学 | Biomass waste coupling wet garbage multi-state co-production comprehensive utilization system and process |
| CN112195034B (en) * | 2020-09-15 | 2021-10-08 | 上海工程技术大学 | Biomass waste volatile component catalytic oil shale dry distillation coupling system and method |
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| DE102010014768B4 (en) * | 2010-04-13 | 2021-10-28 | Nexxoil Gmbh | Process for the thermal splitting of high molecular weight organic waste |
| CN102977904B (en) * | 2012-11-16 | 2014-08-13 | 东北电力大学 | Oil shale synthesized utilization method |
| CN102942943B (en) * | 2012-11-16 | 2014-04-16 | 东北电力大学 | Oil shale gas-solid heat carrier dry distillation and semicoke combustion electricity generation integral process |
| CN105295983B (en) * | 2015-11-18 | 2017-06-16 | 上海交通大学 | A kind of oil shale utilizes system and its technique with the Poly-generation of organic solid castoff |
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